Jane Street’s Korro Bio KRRO Stock Holding History

Jane Street’s Portfolio KRRO Stock Details KRRO Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$1.31M	Sell	115,704 -172,753	-60%	-$1.9M	﹤0.01%	5913
2025 Q4	$2.31M	Buy	+288,457	New	+$6.74M	﹤0.01%	4527
2025 Q1	–	Sell	-7,604	Closed	-$289K	–	10079
2024 Q4	$289K	Buy	+7,604	New	+$391K	﹤0.01%	7790
2024 Q2	–	Sell	-25,814	Closed	-$2.32M	–	9827
2024 Q1	$2.32M	Buy	25,814 +18,449	+250%	+$1.01M	﹤0.01%	3863
2023 Q4	$353K	Buy	+7,365	New	+$243K	﹤0.01%	7367
2023 Q1	–	Sell	-201	Closed	-$38.6K	–	9505
2022 Q4	$38.6K	Sell	201 -291	-59%	-$29.9K	﹤0.01%	8444
2022 Q3	$44K	Buy	+492	New	+$49.9K	﹤0.01%	8977
2021 Q2	–	Sell	-2,502	Closed	-$1.22M	–	10124
2021 Q1	$1.19M	Buy	+2,502	New	+$4.86M	﹤0.01%	5129
2020 Q4	–	Sell	-365	Closed	-$351K	–	7815
2020 Q3	$351K	Buy	365 +47	+15%	+$50.5K	﹤0.01%	5659
2020 Q2	$370K	Buy	+318	New	+$287K	﹤0.01%	5518

Other funds holding KRRO

LCM

Lynx1 Capital Management San Juan, Puerto Rico $633M AUM 173.22% 1-Year Est. Return

NMC

NEA Management Company Timonium, Maryland $1.76B AUM 223.33% 1-Year Est. Return

AVLSA

Atlas Venture Life Science Advisors Cambridge, Massachusetts $790M AUM 223.66% 1-Year Est. Return

Balyasny Asset Management Chicago, Illinois $77.1B AUM 42.89% 1-Year Est. Return

VR Adviser New York $2.68B AUM 422.73% 1-Year Est. Return

AAA

Affinity Asset Advisors New York $1.94B AUM 374.45% 1-Year Est. Return

NCM

Nantahala Capital Management New Canaan, Connecticut $2.72B AUM 121.58% 1-Year Est. Return

ACM

ADAR1 Capital Management Austin, Texas $1.7B AUM 340.85% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

DCM

Driehaus Capital Management Chicago, Illinois $13.6B AUM 173.98% 1-Year Est. Return

Jane Street's KRRO Position: Q1 2026 in Review

Jane Street reduced its Korro Bio (KRRO) stake by 60% in Q1 2026, selling an estimated $1.9M and leaving 115,704 shares worth $1.31M. The position accounts for ﹤0.01% of the portfolio, ranked #5913.

Jane Street first reported a position in KRRO in Q2 2020 and has held it in 10 quarters since. The position peaked at $2.32M in Q1 2024. 99 funds tracked by Wall St. Rank hold KRRO as of Q1 2026.

Jane Street held 115,704 shares of Korro Bio worth $1.31M as of Q1 2026.
Jane Street sold 172,753 Korro Bio shares in Q1 2026, an estimated $1.9M.
Korro Bio made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #5913 holding.
Jane Street first reported a position in Korro Bio in Q2 2020 and has held it in 10 quarters since.
Jane Street's Korro Bio position peaked at $2.32M in Q1 2024.
99 funds tracked by Wall St. Rank held Korro Bio as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.